Carving-machine.



F. H. RICHARDS.

UARVING MACHINE. APPLICATION FILED JULY 3,1902.

922,51 3 Patented May 25, 1909.,

1 6 SHEETS-SHEET 1.

THE NORRIS PETERS co., WASHINGTON, n, c

I. H. RICHARDS.

- GARVING MAGHINEQ I APPLICATION FILED JULY 3. 1902.

922,51 3., Patented May 25, 1909.

2 5 SHEBTB-SHBET 2.

THE NORRIS PETERS 50., wnsnmcmu, D- c.

F. H RICHARDS. GARVING MACHINE. APPLICATION TILED JULY 3.1902.

Patented May 25, 1909 5 SHEETS-SHEET 4.

jmfenim Patented May'25, 1909.

5 SHEETS-SHEET 5.

IHE NORRIS psrzns ca, WASHINGTON: n. c.

'UNf

CARVINGMACHINE To all whom it may concern:

Be it known that I, FRANeIs H. R101 ARDS, a citizen of the UnitedStates, residing at Hartford, in the county of Hartford and State ofConnecticut, have invented certain new and useful Improvements inCarving- Machines, of which the following is a specification.

This invention pertains to the adaptation and use of mechanical elementsrelated and organized to effect the cooperation of a continuous feed ofstock and a plurality of cutting elements operative upon said stockduring a period of coincident movement therewith, such for instance as amachine for carving moldings.

Some of the objects of my invention are to provide a mechanicalorganization of simple design and direct and effective action, a machinedesigned with the object of avoiding, as far as is warrantable in apractical device, the element of friction and a relation of workingmembers which is productive of the desired results of compact, protectedand efficient design.

I have illustrated one embodiment of the principle of my invention inthe accompanying drawings in which like reference characters denote likeparts.

Figure 1 is a side elevation of a carving machine embodying my inventionshowing side wall partially cut away; Fig. 2, a vertical cross-sectionon line a':c of Fig. 1; Fig. 3, a plan view showing worm wheel domes cutaway; Fig. 4, a detail of tool clamp; Fig. 5, plan and side views ofhorizontal carriage and actuating arm; Fig. 6, side and edge views ofcam; Fig. 7, a detail in perspective of platform plate and presser rollmechanism; Fig. 8, a detail in perspective of the carrier Fig. 9, adetail in perspective of the stock guide; Fig. 10, a diagrammaticalrepresentation of the movements of the carrier actuating mechanismshowing twelve consecutive positions of the several parts during onerevolution of the driving shaft indicated by the numerals l to 12; andFig. 11, a diagrammatical representation of the movements of the toolcarriage actuating mechanism showing twelve consecutive positions of theseveral parts during one revolution of the driving shaft indicated bythe numerals 1 to 12.

Referring to the drawings and the form of mechanism illustrated herein,the machine is mounted and assembled on a box-like Specification ofLetters Patent.

Application filed July 3, 1902.

Patented May 25, 1909.

Serial No. 114,189.

frame A, which frame has a partition B centrally located parallel withone of the side walls thereof and extending upward the greater portionof the height of said frame. A stock guide C is mounted longitudinallyof the top of the frame A supported at either end of said frame. Anaperture 2 is provided in the top of the frame A. A carrier or slide 3is mounted in guide ways 4, 4, parallel with said stock guide and slidesparallelly of said stock guide over the aperture 2 in the top of theframe A overlapping and closing said aperture throughout said movement.A yoke 5 depends from the carrier 3 through the aperture 2 in the frameA, the inner faces of said yoke forming slide ways. One of the innerfaces of said yoke may be provided with an adjustable gib.

A driving shaft 7 is mounted transversely of the frame A in a bearing 8in one side wall of the frame and a beariiig 9 in the partition B. Theshaft 7 projects without the frame A and is provided upon its projectingpor tion with a power pulley 10. A spur gear 11 is mounted fast on theshaft 7 and meshes with a spur ear 12 fast on a shaft 13 mountedparaffel to the shaft 7 in a bearing 14 in the side wall of the frame Aand a bear ing 15 in the partition B. The spur gear 11 also meshes witha spur gear 16 fast on the shaft 17 mounted parallel to the shaft 7 in abearing 18 in the side wall of the frame A and a bearing 19 in thepartition B. The spur gears 11, 12 and 16 are all of the same diameterand therefore the shafts 7, l3 and 17 will run at the same speed. Arocking lever 20, consisting of two side pieces joined by studs, ispivoted at its lower end upon the stud 21 projecting from the lowerportion of the partition B. A pin 22 at the u per end of the levercarries a bearing b ock 23 which is engaged by and is adapted to aslight vertical movement in the yoke 5.

It will be seen that a rocking movement imparted to the rocking lever 20will produce a reciprocating movement of the carrier 3 in the guide ways4 parallelly of the stock guide C, and that the slight movement in anarc of the point of engagement of the rock ing lever 20 with the carrier3 will be compensated for by the vertical play of the bearing block 23in the yoke 5.

A lever 24 is pivoted at 25 on the rocking lever 20. The upper end ofthe lever 24 is connected by a connecting rod 26 with a crank 27 on theshaft 13. I desire to point out the fact that if the connecting rod 26were directly connected from the crank 27 to the rocking lever 20, themovement which would then be imparted to the carrier 3 would not be auniform reciprocation, but would be at varying speeds. The reciprocationof the carrier 3 is to be at uniform speed in the machine illustrated,and therefore I connect the connecting rod 26 to one end of the lever 24which is pivoted on the rocking lever 20, and provide a loose roller 28at the lower end of the lever 24, which loose roller 28 is adapted torun upon the periphcry of a cam 29 mounted fast on the shaft 17. Aspring 30 connects a projection on the lever 24 with a projection on thelever 20 and maintains the roller 28 constantly in contact with the cam29. The cam 29 is designed to complement the action of the crank 27 toproduce a movement of the rocking lever 20 through the pivotal point 25which will result in the movement of the carrier 3 at a uniformvelocity. This uniform velocity may be carried out only in the directionof the feed of the stock along the stock guide 0, if desired, or mayalso be carried out in the return movement.

The combination of the crank movement above described with the cam tocomplement the same acting together upon the supplemental lever 24,obviates the necessity for using a cam for obtaining the uniformvelocity in the carrier 3 which would have a number of high pitchedriding surfaces thereon as the cam 29 as used in the machine illustratedclosely approaches the circular or eccentric form which is mechanicallypreferable for reasons obvious to the skilled mechanician.

It will be seen that the lever 20 is controlled in its reciprocation orangular movement toward the left in Fig. 1 by two devices, one of which,the crank, normally has a tendency to force it in this direction througha determined angular distance, but the action of this is interfered withand controlled and modified by the other device, the movable abutment orcam 29, which at times yields in the direction of pressure of thefulcrum end of said lever 24, and in this regard may be said to be aretreating abutment, minimizing the crank action, and at other timesmoves against the fulcrum end and augments the movement or pressure ofthe crank. The extent of movement imparted by the first device is at alltimes controlled by the retreating and advancing abutment. The amplitudeof the working stroke, the movement with the feed of the carrier 3, ispositively determined and its normal stroke varied by the interferenceof the controlling means, comprising a cam 29 and lever 24, which atcertain portions of the cycle of movements positively prevents thecarrier 3 from fully responding to the action of the crank 27.

A miter gear 31 fast on the driving shaft 7 meshes with a miter gear 32fast on a shaft 33 supported in a boX bearing 34 projecting from theside wall of the frame A. The shaft 33 is driven at the same speed asshaft 7. A miter gear 35 fast on the upper end of the shaft 33 mesheswith a miter gear 36 fast on a shaft 37 mounted parallel to the stockguide C in bearings 38 in the walls of the frame A. Adjacent either endof the shaft 37 are mounted fast thereon two worms 39 and 40. The worms39 and 40 respectively mesh with worm wheels 41 and 42 respectivelymounted fast on shafts 43 and 44. The shafts 43 and 44 are mountedtransversely of the frame A in bearings 45 in a platform plate 46 whichis securely bolted to the top of the frame A. The platform plate 46 isprovided with domes 47 to arch over and inclose the worm wheels 41 and42. The feed rolls 48 and 49 are respectively mounted fast on shafts 43and 44, said feed rolls being of equal diameters and being driven atequal speeds from the shaft 37. The peripheries of the feed rolls 48 and49 project through openings 50 in the stock guide C and slightly abovethe floor of said stock guide.

The feed rolls 48 and 49 are adapted to feed stock along the stock guide0 at a uniform speed and the gearing previously described forreciprocating the carrier 3 is patterned and arranged to move saidcarrier 3 in the direction of the feed of the stock along the stockguide C at a velocity coincident with the velocity of stock feed alongsaid stock guide by the feed rolls 48 and 49. Therefore it will be seenthat the stock and the carrier 3 during that time when the carrier 3 istraveling in the direction of the travel of said stock will have a fixedrelation as regards one another.

The carrier 3 reciprocates beneath the stock guide 0 and has guide ways52 disposed therethrough which project upwardly behind the stock guide 0and guide ways 53 upon the surface thereof arranged transversely of andin front of the stock guide (3'. j A tool carriage 54 is reciprocatablymounted in the guide ways 52 and overhangs the stock guide, said toolcarriage 54 being adapted to reciprocate up and down to alternatelyrecede from and approach the face of the stock guide. A tool carriage 55is reciprocatably mounted in the guide ways 53 and is adapted toreciprocate toward and away from the stock guide C. The guide ways 52project downwardly beneath the carrier 3 through the aperture 2 in theframe A and the tool carriage 54 mounted therein projects within theframe A below said aperture 2. The tool carriage 55 reciprocatesentirely upon the surface of the carrier 3, but has a depending yoke 56which extends downwardly through an aperture 57 in the carrier 3 throughthe aperture 2 in the top of the frame A within said frame. The yoke 56forms a vertical slide way and may be provided with an adjustable gib 58to take up wear.

A shaft 59 is mounted in bearings 60 in the end walls of the frame A andis oscillatable therein and also capable of axial movement therein. Anarm 61 is mounted fast upon the shaft 59 and projects upwardly carryinga bearing block 62 pivoted at its upper end which bearing block 62 isengaged by the yoke 56 depending from the tool carriage 55. The bearingblock 62 is capable of a vertical movement in the yoke 56 whichcompensates for the movement in an arc of the arm 61 which arises whenthe shaft 59 is rocked, while at the same time said arm 61 is adapted toreciprocate the carriage 55 in the guide ways 53. A lever 63 is mountedfast upon the shaft 59 and has one end connected by a connecting rod 64with a projection upon the tool carriage 54. When the shaft 59 is rockedthe arm 63 through the connecting rod 64 will reciprocate the toolcarriage 54 in the guide ways 52.

A yoke 65 depends from the carrier 3 through the aperture 2 in the topof the frame A and grasps the shaft 59 between the hub of the lever 63and a collar 66 fast on said shaft. hen the carrier 3 is reciprocatedparallelly of the stock guide C, the yoke 65 grasping the shaft 59 willcarry said shaft axially with said carrier 3 thereby maintaining theconnections between said shaft and the tool carriages 54 and 55 on thecarrier 3 in a stationary relation relative of said shaft 59 and carrier3. The other arm of the lever 63 is connected with a crank 67 on thedriving shaft 7 by a relatively long connecting rod 68 articulated withsaid lever 63 and crank 67 in universal joints, the said universaljoints allowing for the movement of the lever 63 in an arc. Theconnecting rod 68 is made relatively long to render the variation in themovements of the tool carriages 54 and 55, which would occur on accountof the lateral movement of the lever 63 relatively of the fixed positionof the crank 67, so slight as not to produce a detrimental effect in thegeneral working of the machine.

For convenience and for the reduction of verbiage in the claims astructure performing the work of that embodying the lever 63 and the arm61 may be termed a multi-armed lever.

The guide ways 52 and 53 carrying the tool carriages 54 and 55 arepreferably set in different planes from the carrier 3 to give the toolcarriages 54 and 55 paths of reciprocation which strike the stock guideC at separate points. In the machine illustrated l have mounted twotools 70 upon each of the tool carriages 54 and 55 said tools directedin line with the travel of said tool carriages which travel inintersecting planes, said tools adapted to strike the stock lying in thestock guide at separate points to incise the contradistinctive incisionsof separate repeats of a pattern to be cut thereon. The tools upon onecarriage will incise the contour of two repeats or two ornaments orparts of ornaments of an ornamental design at the same time that the twotools upon the other car riage will be making incisions meeting theincisions previously made by the said first mentioned tools and chippingout a finished design. The tool carriages are moved toward and away fromthe stock to make the said incisions by the mechanism hereinbeforedescribed durin that period. of its motion that the carrier 3 istraveling coincidently with the stock and said tools remain entirelywithout the stock during the re turn movement of the carrier 3, againincising upon the next movement with the stock to make the nextsucceeding incisions by each of the said sets of tools. I may em ploy agreater number of tools, or only one, as the particular case mayrequire, patterning the mechanism in accordance with the principleherein illustrated to produce the desired result.

The feed of the stock is gaged to correspond with the movement of thecarrier 3, or vice versa, and the said. two movements are gaged tocorrespond with and repeat the area upon the stock operated upon by thetools, which will readily appear to one skilled in the particular art towhich this invention appertains.

Upon. the platform plate 46 rocking arms 71 carry shafts 72 transverseof the stock guide C, which shafts are provided with presser rolls 73which are designed to bear upon the stock directly over the feed rolls,and are given a downward pressure thereon by springs 74 connectedbetween the arms 71 and the frame below.

All of the shafts in the machine are restricted against longitudinalmovement by the hubs of the gears mounted thereon, and collars wherenecessary, except the shaft 59 which, as heretofore stated, is capableof an axial movement. The frame A may be provided with a door D to admitof access to the interior of the machine.

The moving parts are designed to close all apertures leading to theinterior of the frame A, thereby excluding dirt and dust from themechanism therein. Dust guards 75 are secured to the frame A and overlapthe ends of the carrier 3, covering throughout the movement of saidcarrier the openings at either end thereof between the guides 4.

lt is obvious that various changes may be made in the details ofconstruction and ar- &

rangement of my machine without departing from the principle or scope ofthis invention.

The feature of tool carriages mounted upon a reciprocatory carriage andreciprocable in different directions thereon is claimed in my co-pendingapplication, Serial No. 107,023, filed May 12, 1902.

Having described my invention, I claim 1. In a carving machine, thecombination of a frame, a stock guide on said frame, a carrier mountedupon said frame to reciprocate parallelly of said stock guide, cuttersmounted upon said carrier and reciprocatable transverselyof said stockguide and one another, and means connected with said outters and carriedwith said carrier for actuting the cutters.

2. In a carving machine, the combination of a frame, a stock guide onsaid frame, a

carrier mounted on said frame to reciprocate parallelly of said stockguide, cutters mounted upon said carrier andreciprocable transversely ofsaid stock guide and one another, a drive shaft and means operable fromsaid shaft and mounted on said frame and reciprocatable parallelly ofthe path of movement of said carrier, said means being connected withsaid cutters for actuating the same and engaged by said carrier totravel therewith.

3. In a carving machine, the combination of a frame, a stock guide onsaid frame, a carrier mounted upon said frame to reciprocate parallellyof said stock guide, cutters mounted upon said carrier andreciprocatable transversely of said stock guide and one another, adriver and a multi-armed lever having its arms respectively connectedwith said driver and said cutters and carried with said carrier.

4. In a carving machine, the combination of a frame, a stock guide onsaid frame, a carrier mounted on said frame to reciprocate parallelly ofsaid stock guide, cutters mounted upon said carrier reciprocatabletransversely of said stock guide and one another, a driver and amulti-armed lever mounted on said frame and synchronously reciprocatableparallelly of the path of movement of said carrier, said multi-armedlever having its arms respectively connected with said driver and saidcutters and being engaged by said carrier to travel therewith.

5. In a carving machine, the combination of a frame, a stock guide onsaid frame, a carrier mounted on said frame to reciprocate parallelly ofsaid stock guide, cutters mounted upon said carrier reciprocatabletransversely of said stock guide and one another, a shaft mounted onsaid frame parallel to the path of reciprocation of the said carrier andcapable of both rotative and axial movement, a driver, a plurality offast arms on said shaft connected respectively with said cutters andsaid driver and an engaging member on said carrier engaging said shaftto axially reciprocate said shaft with said carrier to maintain a fixedrelationship between said shaft and carrier. r

6. In a carving machine, the combination of a frame, a stock guide onsaid frame, a carrier mounted on said frame to reciprocate parallelly ofsaid stock guide, cutters mounted upon said carrier reciprocatabletransversely of said stock guide and one another, a shaft mounted onsaid frame parallel to the path of reciprocation of the said carrier andcapable of both rotative and axial move ment, a plurality of fast armson said shaft, a pivoted bearing block carried by one of said arms, ayoke upon one of said cutters engaged by said bearing block, a linkconnecting the other of said arms with the other of said cutters, afurcated arm upon said carrier embracing said shaft and shoulders onsaid shaft at either side of said furcated arm effecting an axialmovement of said shaft with said carrier.

7. In a carving machine, the combination with a frame and a stock guidethereon of a tool carrier mounted upon said frame to reciprocateparallelly of said stock guide, a driving shaft mounted on said frame, arocking lever pivoted on said frame and engaging said tool carrer at itsfree end to reciprocate the same, an auxiliary lever pivoted upon saidrocking lever, a crank driven from said driving shaft and operativelyconnected to said auxiliary lever and a cam driven from said drivingshaft and operatively connected to said auxiliary lever, said crank andcam coacting with said auxiliary lever to produce a rocking movement ofsaid rocking lever which imparts a reciprocating movement at a uniformvelocity in one direction at least to said tool carrier.

8. In a carving machine, the combination with a frame and a stock guidethereon, of a driving shaft mounted on said frame, a continuous uniformfeed driven from said driving shaft, a tool carrier mounted upon saidframe to reciprocate parallelly of said stock guide, a rocking leverpivoted on said frame and engaging said tool carrier at its free end toreciprocate the same, an auxiliary lever pivoted upon said rockinglever, a crank driven from said driving shaft and operatively connectedto said auxiliary lever, and a cam driven from said driving shaft andoperatively connected to said auxiliary lever, said crank and camcoacting with said auxiliary lever to produce a rocking movement of saidrocking lever which imparts a reciprocating movement to said toolcarrier coincident with the feed in the direction of said feed.

9. In a carving machine, the combination with a reciprocatable carriage,of a rocking arm engaging said carriage to reciprocate the same, anauxiliary lever pivoted upon said rocking lever, a power driven member,a crank actuated by said power driven member and linked to saidauxiliary lever and a cam actuated by said power driven memberoperatively connected to said auxiliary lever, all organized to effect areciprocation of said carriage at uniform speed in at least onedirection and to employ the said cam of a form closely approximating acircle.

10. In a carving machine, the combination with a reciprocatablecarriage, of a rocking arm engaging said carriage to reciprocate thesame, an auxiliary lever pivot-ed upon said rocking lever, a power shaftmounted transverse of the plane of oscillation of said rocking arm, acrank driven from said power shaft and linked to one end of saidauxiliary lever, and a cam driven from said power shaft and operativeu.)on the other end of said auxiliary lever, a ll organized to effectsuch a rocking of said rocking arm by the resultant action of said crankand cam, as will produce a reciprocation of said carriage of uniformspeed in one direction at least.

11. In a carving machine, the combination with a reciprocatablecarriage, of operatable tools carried by said carriage, a rocking armengaging said carriage to reciprocate the same, an auxiliary leverpivoted upon said rocking arm, a power shaft, a crank driven from saidpower shaft linked to said auxiliary lever, a cam driven from said powershaft and operatively connected to said auxiliary lever; said crank andcam and connections organized to rock said rocking arm to pro duce areciprocation of said carriage at a uniform speed in one direction, acrank on said power shaft and a connecting rod operatively connectingsaid crank and tools.

12. In a carving machine, the combination with a reciprocatablecarriage, of a rocking arm engaging said carriage to reciprocate thesame, an auxiliary lever pivoted upon said rocking arm, a power shaft, acrank driven from said power shaft and linked to said auxiliary lever, acam driven from said power shaft and operatively connected to saidauxiliary lever, said. crank and cam and connections organized to rocksaid rocking arm to reciprocate said carriage at a uniform speed in onedirection and one or more feed rolls driven from said power shaft tofeed stock in the direction of and at a speed corresponding to that ofthe said carriage during its uniform movement.

13. In a carving machine, the combination with a reciprocatablecarriage, of a power shaft, connections between said power shaft andcarriage for reciprocating the latter, one or more operatable toolsmountedupon said carriage, a crank driven from said power shaft, and aconnecting rod operatively connecting said crank and tools, saidmechanisms related. to effect a like direction of travel of the wrist ofsaid crank and said carriage.

14. In. a carving machine, the combination with a reciprocatablecarriage, of a power shaft mounted transversely of the line ofreciprocation of said carriage, operative connections between said powershaft and carriage to reciprocate the latter, feed rolls geared to anddriven from said power shaft, a plurality of operatable tools carried bysaid carriage, a crank on said power shaft the wrist of which crankbeing adapted to move in the same general directions as said carriageand connections between said crank and tools adapted to operate thelatter.

15. In a carving machine, the combination with a reciprocatable carriageand a rocking arm engaging said carriage to reci )rocate the same of adriving shaft, a crank actuated from said driving shaft, a cam actuatedfrom said driving shaft, an auxiliary lever fulcrumed upon said rockinglever and adapted to reciprocate by the resultant action of said crankand said cam, said rocking lever to effect a movement of said carriageof uniform velocity in one direction, a plurality of operatable toolscarried by said. carriage, a multi-armed lever operatively connected toand to operate said tools, said multi-armed lever carried with saidcarriage, a tool operating crank actuated from said driving shaft, aconnecting rod universally articulated with said tool operating crankand said multi-armed lever and feed rolls geared to said driving shaftto develop a pcripheral velocity corresponding to the velocity of saidcarriage during its uniform movement.

16. In a carving machine, the combination with a frame, a stock guideupon the frame, a carriage mounted upon the frame for reciprocation in apath parallel to said stock guide, a crank and lever for reciprocatingsaid carriage, means interposed between the lever and crank for causingthe excursion of the carriage in the direction of the stock feedmovement to be at a constant speed, cutters mounted upon said carriageand reciprocatable transversely of said stock guide and one another, adriver and a multi-armed lever mounted on said frame and reciprocatableparallel with the path of movement of said carriage, said multi-armedlever having its arms operatively connected with said driver and saidcutters, and being engaged by said carrier to travel therewith.

17. In a carving machine, the combination with a frame, of a stockguide, a carriage reciprocatory upon the frame in a path parallel to thestock guide, a pivoted lever having, at a point having movement in anare, a connection with said carriage constructed and adapted forpermitting said movements, in an arc, a crank for rocking the lever, acompensating device between the crank andv lever, a plurality of sets oftools reciprocatory in transverse directions and carried by saidcarriage, and means for reciprocating said. tools.

18. In a carving machine, the combination with a frame, of a stock guidethereon, ways on the frame parallel to said stock guide, a carriagemounted on said ways, a lever having a compensating connection with saidcarriage, a crank for rocking said lever, a com pensating deviceconnecting said crank and lever, a plurality of tool slides mounted onsaid carriage and reciprocatory in transverse paths, a multi-armed leverfor reciprocating said slides, a crank for rocking said lever and acompensating device connecting said crank and lever.

19. In a carving machine, the combination with a frame, of a stock guideon the frame, ways on the frame parallel to the stock guide, a carriagemounted upon said ways, a yoke on the carriage, a bearing block mountedin the yoke, a lever pivoted at one end to the frame and at the otherend to said block, a crank for rocking said lever for reciprocating saidcarriage, a compensating connection be tween said crank and leverembodying a lever centrally pivoted to the carriage actuating lever andlinked at one end to said crank, a cam engaging the other end of saidcentrally pivoted lever, tools carried by said carriage, and means foractuating said tools.

20. In a carving machine, the combination with a frame, of a stock guideon the frame, ways on the frame parallel to the stock guide, a carriagemounted upon said ways, a yoke on the carriage, a bearing block mountedin the yoke, a lever pivoted at one end to the frame and at the otherend to said block, a crank for rocking said lever for reciprocating saidcarriage, a compensating connection between said crank and leverembodying a lever centrally pivoted to the carriage actuating lever andlinked at one end to said crank, a cam engaging the other end of saidcentrally pivoted lever, cutters mounted upon said carriage andreciprocatable transversely of said stock guide and one another, adriver and'a multi-armed lever mounted on said frame and reciprocatableparallel with the path of movement of said carriage, said multi-armedlever having its arms reciprocatively connected with said driver andsaidcutters, and being engaged by said carrier to travel therewith.

21. In a carving machine, the combination with a frame, of a stock guidethereon, ways on the frame parallel to said stock guide, a carriagemounted on said ways, a lever having a compensating connection with saidcarriage, a crank for rocking said lever, means connecting said crankand lever for, modifying the crank action imparted to said lever, aplurality of tool slides mounted on said carriage and reciprocatory intransverse paths, means for reciprocating said slides, a crank foractuating said reciprocatory means, and a compensating device connectingsaid crank reciprocatory means.

FRANCIS H. RIGHARDS.

Witnesses:

FRED. J. DOLE, JonN O. SEIFERT.

